fix NSEC wildcard denial
fix NSEC3s for DS no data (mode 1)
pdnssec check-zone, warn if parsed and original content are not equal
pdnssec check-zone, check for missing NS at apex and records in unlikely places
pdnssec check-zone, improve SOA content check
pdnssec check-zone, improve duplicate checks
pdnssec check-zone, fix record counting and improve out of zone check
pdnssec check-zone, more tolerant IPv6 format check
pdnssec check-zone, fix DNSKEY checks
fix for "missing" libmysqlclient on RHEL/CentOS based systems
add unbound-host to travis builds